PollShiftStateEvent
Check current shift state.
Declaration
Source position: keybrdh.inc line 159
function PollShiftStateEvent : TKeyEvent;
Description
PollShiftStateEvent returns the current shiftstate in a keyevent. This will return 0 if there is no key event pending.
Errors
None.
See also
| Name | Description |
|---|---|
| GetKeyEvent | Get the next raw key event, wait if needed. |
| PollKeyEvent | Get next key event, but does not wait. |
Example
program example6;
{ This program demonstrates the PollShiftStateEvent function }
uses keyboard;
Var
K : TKeyEvent;
begin
InitKeyBoard;
Writeln('Press keys, press "q" to end.');
Repeat
K:=PollKeyEvent;
If k<>0 then
begin
K:=PollShiftStateEvent;
Writeln('Got shift state : ',ShiftStateToString(K,False));
// Consume the key.
K:=GetKeyEvent;
K:=TranslateKeyEvent(K);
end
{ else
write('.')};
Until (GetKeyEventChar(K)='q');
DoneKeyBoard;
end.